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Mathematics
Ulises Guerrero
15 November, 19:55
What is 3x - 4 + 20 = 55
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Kira Romero
15 November, 20:19
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So first subtract 20 from both sides of the equation.
3x-4=35
now add 4 to both sides.
3x=39
now divide both sides by
x=13
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